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| 1 | Design and research of RF system for 10 MeV compact cyclotron显示文摘A 10 MeV compact cyclotron (CYCHU-10) has been developing in Huazhong University of Science and Technology (HUST). The RF system includes a 10 kW RF power generator and a resonance cavity. There is no automatic frequency tuning equipment in the cavity due to space limitations, so the generator must search and track the cavity resonant frequency. AD9850 synthesizer is used to generate RF signal in the experimental prototype, and a fine sinusoidal waveform around 99 MHz is obtained with the method of picking up a special aliased signal from the synthesizer's output, and the output power level can be set by regulating the resistor connected to the Pin 'Rset'. The final stage amplifier based on tetrode operates in the grounded cathode configuration, and the schematic of the tetrode circuit is illustrated. The method of searching the resonant frequency is discussed in detail. For the sake of a compact and robust structure, the resonance cavity will adopt non-uniform characteristic impedance coaxial structure, and the magnet surface electroplated with copper will be used as dummy Dees. The precise shapes and dimensions of the cavity are designed and simulation results are carried out in this paper. The distributions of electromagnetic field are illustrated by means of numerical calculation analysis, and the wooden model test is preformed as well. | Dong Li (1) TongNing Hu (2) KaiFeng Liu (1) Jun Yang (1) | 2011 | Science China(Physics,Mechanics & Astronomy)2011，54，S2： | 2 |
| 2 | Diosminprotectsratretinafrom ischemiareperfusioninjury显示文摘 | TongN ZhangZ GongY YinL WuX | 2012 | JOculPharmacolTher2012，28，5： | 1 |
| 3 | Simplified segmented human models for whole body and localised SAR evaluation of 20 MHz to 6 GHz electromagnetic field exposures显示文摘 | Wu Tongning Shao Qing Yang Lei | 2013 | Radiation Protection Dosimetry2013，153，3： | 1 |
| 4 | M-T Scheme for Predicting Effective Diffusion Coefficient of Chloride Ions in Cement-based Materials显示文摘To investigate the transport characteristics of chloride ions in cement-based materials, the Mori-Tanaka (M-T) prediction scheme of the effective diffusion coefficient in composites containing single-phase and multi-phase inclusions is systematically deduced based on the theory of composite mechanics and porous medium. The volume fraction, morphology and distribution of aggregates, as well as the interfacial transition zone (ITZ) are fully taken into consideration in this proposed model. The results show that the algorithm of M-T prediction scheme with high accuracy is relatively simple. | 孙国文 ZHANG Jianjian ZHANG Lijuan CAO Tongning WANG Penshuo ZHANG Ying YAN Na | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，3： | 1 |
| 5 | Artificial Plant Seeds and Their Application显示文摘The artificial plant seed is a new technology developed on the basis of the in vitro plant culture technology.As a high-tech achievement with great development potential and economic value in the 21^(st) century,artificial plant seeds have great potential advantages.This paper briefly introduced artificial plant seeds,their composition and advantages,the preparation of artificial plant seeds and the application of artificial plant seeds. | Yilong HOU Zhiruo QI Sihan YU Chuiyu KONG Tongning BAI Qing LI | 2022 | Agricultural Biotechnology2022，11，2： | 0 |
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